因此，虽然我不敢说实现的东西都最终会在某种程度上得到使用，但是许多功能的确经过了多次设计修订。

So while I wouldn't say that we have implemented anything that didn't end up getting used in some form, there are plenty of features that went through multiple design revisions.

youdao

这个修订的系统相对于r4 . x设计是一个改进，主要因为它执行得更快了。

This revised system was an improvement over the R4.x design, primarily because it performed faster.

youdao

从今以后，为Iphone及其同类产品研发程序的开发人员必须签署一份修订协议，禁止开发人员使用未经苹果准许的其他设计工具编写程序。

Henceforth, developers creating applications for the iPhone and its ilk will have to sign a revised agreement that forbids them from using any programming tools other than Apple's approved set.

youdao